Georg emil kelling



(No Model.)

G.E.KELLING. BENT ROTATABLE GASTROSGOPE.

Patented Feb. `8, 1898.

me mums linens cn. wore-uwe., wAsumoYoN, o. e4

UNiTnn STATES PATENT Trina.4

GEORG EMIL KELLING, OF DRESDEN, GERMANY.

BENT vROTATABLE eAsTRoscoPE.

SPECIFICATION forming part of Letters Patent No. 598,787, dated February8, 1898. Application niet March 20,1897. stanno. 628,491. ciovmoaei.)

To all tzr/tom t may concern.- i

Be it known that I, GEORG EMIL KELLING,

of Dresden, in the Kingdom of Saxony, in the German Empire, haveinvented a new and useful Bent Rotatable Gastroscope, of which thefollowing is a specification, reference being had therein to theaccompanying draW-.

ings.

This invention relates to surgical instruments, and is an improvedgastroscope or instrument for visu all y inspecting interior parts ofthe body, especially the human stomach,

.straight apparatus touches the back membrane of the stomach, which inconsequence cannot be inspected. The bent gastroscopes heretoforedevised have to be duplicated for the right and left half of thestomach, and not even with these could the lower part nor the back partof the stomach be inspected. This invention avoids these inconveniencesand produces an adjustable rotatable gastroscope which allows of theinspection of all parts of the stomach.

In the annexed drawings the new invention is shown.

Figure l represents a section onfr of Fig. 2. Fig. 2 is a longitudinalsect-ion through the greater portion of the apparatus. Fig. 3 is alongitudinal section through the illuminating portion of the apparatus,and Fig. 4t represents transverse sections of Fig. 3.

The outer casing R of the instrument is preferably a metallic tube bentas indicated in the drawings, so as to adapt it to be more readilyinserted into the stomach, the upper end of said casing being attachedto a headblock B', of insulating material, provided with a bow B, whichserves as a handle for the instrument. Vithin the upper straight part ofthe casing is a smaller tube R2,which projects through a stuffing-box Son the headblock and is provided with a finger-piece u, by which it canbe rotated. The inner end of tube R2 is provided with teeth Z, meshingwit-h teeth Z on the upper end of another tube R2,which projectsslightly beyond the end of casing R, and on it is secured a hollowrotatable head-section K, which is insulated from tube R2, however, byan interposed insulating-ring j, as shown in Fig. 3. Tube-l R2 isinsulated from the casing'by rings jj2 J2, Fig. 2, and tube R2 isinsulated therefrom by rings j* j, asi indicated in Fig. 3, these tubesbeing preferably lacquered between the insulating-rings.

Within tube R2 is a smaller pipe R2,which projects through astufIing-box S2on the keypiece-u and through a suitable opening in bowB, and has in its outer end an objectglass L', secured by a removablecap D. The inner end of said tube is provided with a tongue Rigwhichextends to the junction of- To magnify the object, lenses L3 and L2 imay be employed, the former being located in a ring H2, secured in tubeR2 near prism P, and the latter being secured in a ring H', secured intube R3, as shown.

Current is supplied to lamp G as follows: On head-block B are oppositeset-screws S2 VS3, and the positive wire is connected to S3 and thecurrent conducted through contact-spring F to the casing R', along whichit is carried to the head-section K, a conducting ring or strip C3 beinglocated at the j unction of the casing and head-section to facilitatethe passage of the current. In the headsection the current is directedthrough a spring F, arranged in the hollow head K' of the section, toone terminal of the lamp-filament, while the other terminal of thelament IOS is connected to a wire D', which in turn connects With a WireG2, insulated from the head K and head-section, but contacting With theinner end of tube R'2, through Which the current flows to tube R2, andthence through pipe R3 and bovs B to a variable contact S', and thencethrough the contact-spring F3 to the binding-post S2. Thus the casingand tubes are made to act as conductors for the electric current.

Air can be admitted through the valve L5 into the casing, the rings jj2j3j4j5, mirror M, and plug jg being suitably notched to allow it topass on into the hollow head K', whence it enters the stomach throughopening O4, or other suitable air-passages may be provided, so as toalloW the air to freely circulate to head K', the stuffing-boxes S S'2preventing it escaping externally.

From the foregoing description and drawings it Will be understood thatafter insertion of the instrument the head-section can be rotated so asto direct the rays of light into any part of the stomach, and that thelatter can be expanded by compressed air, so as to facilitate theinspection thereof.

Having thus described my invention, what I therefore claim as new, anddesire to secure by Letters Patent thereon, is-

1. In a gastroscope, the combination of the casing, having a rotatablehead-section; and an illuminating device in said head-section; Withmeans for rotating said section While inserted in the stomach, for thepurpose and substantially as described.

2. In a gastroscope, the combination of the casing, the mirror andlenses therein, and passages for conducting air into the stomach toexpand the same When the instrument is inserted in the stomach,substantially as described.

' 3. In a gastroscope, the combination of the casing, a rotatablehead-section, reflecting lenses and mirrors, and means for rotating saidhead-section While inserted in the stomach; and an electric incandescentlamp in said head-section, substantially as described.

6. In a gastroscope, the combination of the casing, the mirrorand lensestherein, and passages for conducting air into the stomach to expand thesame when the instrument is inserted in the stomach; With an electriclamp inthe inner end of said gastroscope, substantially as described.

7. In a gastroscope, the combination of the casing, an electric lamptherein electrically connected therewith, with a tube Within the casingelectrically insulated therefrom, but electrically connected to thelamp, and electrical connections between said tube and casing and anelectrical supply, for the purpose and substantially as described.

8. In a gastroscope, the combination of the outer bentcasin g having arotatable head-section and an electric lamp in said section; With therotatable tubes in said casing electrically insulated therefrom, saidcasing and tubes forming conductors for the electric current,substantially as described.

9. In a gastroscope, the combination of the casing, the rotatablehead-section, the lamp in said head-section having one terminalelectrically connected to the casing; the insulated rotatable tubes insaid casing electrically connected With the other lamp-terminal; thefixed pipe in the inner tube, the mirrors, prisms and lenses,substantially as described, and the insulating-supports for the outerends of said casing and tubes, and the binding-posts on said supports,all substantially as and for the purpose described.

lO. In a gastroscope, the combination of the outer bent casing, having arotatable head-section,and an electric lamp in said section; with therotatable tubes in said casing electrically insulated therefrom, saidcasing and tubes forming conductors for the electric current; thenon-rotatable pipe in the outer tube, the object-glass, lenses, prisms,and reiiectors,ar ranged substantially as described, and means forconducting air through the gastroscope to expand the stomach, allsubstantially as and for the purpose set forth.

In Witness whereof I have hereunto set my hand in presence of twoWitnesses.

GEGRG EMIL KELLING.

Witnesses:

HERNANDO DE Soro, PAUL ARRAS.

IOO

